Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What is a primary key in a relational database table?
What is a primary key in a relational database table?
- A candidate key selected as the primary means of identifying rows in a table (correct)
- A combination of one or more columns used to identify rows in a table
- A key that determines all of the other columns in a table
- A key that consists of two or more columns
What is the purpose of normalization in relational databases?
What is the purpose of normalization in relational databases?
- To avoid redundancy (correct)
- To minimize data consistency
- To increase data duplication
- To complicate data storage
What is a composite key in the context of database design?
What is a composite key in the context of database design?
- A key that determines all of the other columns in a table
- A candidate key selected as the primary means of identifying rows in a table
- A combination of one or more columns used to identify rows in a table
- A key that consists of two or more columns (correct)
What does it mean for a column to have 'nullability' in database table design?
What does it mean for a column to have 'nullability' in database table design?
Signup and view all the answers
What does it mean for a table to be in 'first normal form' (1NF)?
What does it mean for a table to be in 'first normal form' (1NF)?
Signup and view all the answers
